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Authorities at the airport were at "stepped up high levels of vigilance," Marshall McClain, president of the Los Angeles Airport Peace Officers Association, told the Daily Breeze.

Dennis Romero is an L.A. Weekly staff writer. He formerly worked at the Philadelphia Inquirer and the Los Angeles Times, where he participated in Pulitzer Prize-winning coverage of the L.A. riots. His work has appeared in Rolling Stone online, the Guardian and, as a young stringer, the New York Times.